Scale Overview
The Dickman Impulsivity Inventory – DII was developed by Scott J. Dickman (1990). It is designed to measure Impulsivity. The scale is intended for use with Adults.
Scale Structure
This instrument consists of 23 items organized into 2 factors/subscales: Functional Impulsivity, Dysfunctional Impulsivity.
| Factor / Subscale |
Items |
N |
| Functional Impulsivity |
2,3,4,5,6,11,12,15,16,19,20 |
11 |
| Dysfunctional Impulsivity |
1,7,8,9,10,13,14,17,18,21,22,23 |
12 |
Response Format
Respondents rate each item using a dichotomous True/False format.
The scale includes 9 reverse-scored items to reduce acquiescence bias.
Scoring
Items are scored by subscale, with each subscale sum representing a distinct dimension.
Total scores range from 0 to 12. Interpretation guidelines:
- Low Impulsivity: 0 – 4
- Moderate Impulsivity: 5 – 8
- High Impulsivity: 9 – 12
Psychometric Properties
Internal Consistency: The scale has demonstrated good to excellent internal consistency with reported Cronbach’s alpha values of Dysfunctional: 0.85, Functional: 0.74.
Administration
The scale is self-administered and typically takes approximately 5 minutes to complete. It can be administered individually or in group settings. No special training is required for administration.